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Example: Classify the following situations as compressible/incompressible flow Consider a typical air flow around a cruising jetliner at 10km altitude. The speed is now 810 km/h, while the ambient conditions are 0.414 kg/m³, 0.261 atm and -50°C. At the stagnation point, the temperature rises over by 25°C, while the density and pressure changes by more than 30% and 45 % respectively. 2. Consider a car at sea-level, 1 atm and 15°C, going at a speed of 90 km/h. The density is 1.225 kg/m³. At a stagnation point, the density there is found to be 1.228 kg/m³,a mere 0.27 % difference. The temperature rises by 0.311 °C and the pressure changes by 0.38 %.

Example: Classify the following situations as compressible/incompressible flow Consider a typical air flow around a cruising jetliner at 10km altitude. The speed is now 810 km/h, while the ambient conditions are 0.414 kg/m³, 0.261 atm and -50°C. At the stagnation point, the temperature rises over by 25°C, while the density and pressure changes by more than 30% and 45 % respectively. 2. Consider a car at sea-level, 1 atm and 15°C, going at a speed of 90 km/h. The density is 1.225 kg/m³. At a stagnation point, the density there is found to be 1.228 kg/m³,a mere 0.27 % difference. The temperature rises by 0.311 °C and the pressure changes by 0.38 %.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Example: Classify the following situations as compressible/incompressible flow 1. Consider a typical air flow around a cruising jetliner at 10km altitude. The speed is now 810 km/h, while the ambient conditions are 0.414 kg/m³, 0.261 atm and -50°C. At the stagnation point, the temperature rises over by 25°C, while the density and pressure changes by more than 30% and 45 % respectively. 2. Consider a car at sea-level, 1 atm and 15°C, going at a speed of 90 km/h. The density is 1.225 kg/m³ . At a stagnation point, the density there is found to be 1.228 kg/m³,a mere 0.27 % difference. The temperature rises by 0.311 °C and the pressure changes by 0.38 %.
Transcribed Image Text:Example: Classify the following situations as compressible/incompressible flow 1. Consider a typical air flow around a cruising jetliner at 10km altitude. The speed is now 810 km/h, while the ambient conditions are 0.414 kg/m³, 0.261 atm and -50°C. At the stagnation point, the temperature rises over by 25°C, while the density and pressure changes by more than 30% and 45 % respectively. 2. Consider a car at sea-level, 1 atm and 15°C, going at a speed of 90 km/h. The density is 1.225 kg/m³ . At a stagnation point, the density there is found to be 1.228 kg/m³,a mere 0.27 % difference. The temperature rises by 0.311 °C and the pressure changes by 0.38 %.
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